John Steinbeck was already suffering serious heart trouble when, in 1962, he and his dog clambered into a pickup with a camper topper for a cross-country trip chronicled in his famous final book, Travels with Charley. Six decades later, Austin writer Lauren Hough sets out in a 2001 Dodge Ram van with her dog, a mutt named Woody, to discover whether they can survive a similar 10,000-mile trip in a much-altered America. The title of her resulting …